42522640643 has 4 divisors (see below), whose sum is σ = 48597303600. Its totient is φ = 36447977688.

The previous prime is 42522640627. The next prime is 42522640663. The reversal of 42522640643 is 34604622524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42522640643 - 2⁴ = 42522640627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42522640597 and 42522640606.

It is not an unprimeable number, because it can be changed into a prime (42522640663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037331468 + ... + 3037331481.

It is an arithmetic number, because the mean of its divisors is an integer number (12149325900).

Almost surely, 2^42522640643 is an apocalyptic number.

42522640643 is a deficient number, since it is larger than the sum of its proper divisors (6074662957).

42522640643 is an equidigital number, since it uses as much as digits as its factorization.

42522640643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074662956.

The product of its (nonzero) digits is 276480, while the sum is 38.

The spelling of 42522640643 in words is "forty-two billion, five hundred twenty-two million, six hundred forty thousand, six hundred forty-three".